Try the accelerator pump, it's probably not working at all.
Gav ----- Original Message ----- From: "Brian Kraut" <eng...@earthlink.net> To: <kr...@mylist.net> Sent: Tuesday, September 02, 2003 11:19 AM Subject: KR>VW/Zenith carb > I have been doing a lot of engine adjustments and running on the ground this weekend. I have a 2180 VW with a single mag and a Zenith carb. I believe that I have the idle and running mixture set correctly, but I am having a problem when I advance the throttle fast. If I push in the throttle slowly (three to four seconds from idle to full speed) everything is fine. If I go any faster than that it will start to cough and it will die if I do it fast enough. > > I had never seen this problem before on this or any other aircraft engine. This may just be because I always advance the throttle smoothly and slowly and this was the first time I have tried ramming it in. This may be normal for a plane without an accelerator pump. I tried adjusting the idle mixture richer and leaner, but it doesn't really seem to affect the way it reacts to a fast throttle movement. > > Can anyone else with this engine and throttle combination comment on this? > > _______________________________________________ > see KRnet list details at http://www.krnet.org/instructions.html
